Asian shares are mixed ahead of Trump's deadline for Iran to reopen oil route

Asian shares are trading mixed as oil prices continued to surge ahead of a deadline that U.S. President Donald Trump set for Iran to fully reopen the Strait of Hormuz or risk its power plants and bridges being bombed. Tokyo's benchmark fell early Tuesday, while shares rose in Sydney and Shanghai, and those in South Korea were little changed. The U.S. stock market drifted higher. The S&P 500 rose 0.4%, the Dow added 0.4%, and the Nasdaq climbed 0.5%. Brent crude was above $111 a barrel. Oil prices have been seesawing amid uncertainty about what will happen in the war and how long it will slow the global flow of oil and natural gas.